how to root g22 bird73_gb (htc amaze chinese clone)

Hi expirience engineers
I'm trying to root the pho e and really struggle.
I have used "one super click' 'root unlocker' 'root z4' but no luck so far.
Phone's gui looks similar like htc, but in recovery mode the backup option is missing, also cannot root the phone in the way most htc can be rooted (via code string from abd command)
phone details
android 4.0.1
amaze_4G
GrJ90
mt6573
Brand: Birda
product: bird73_gb
chang jiang is mostly possible developer
'syndicate apps.com' done some gui additional template
4,3"screen
Please help
Im really stuck on what can do and which software use toroot this phone